122871047 has 4 divisors (see below), whose sum is σ = 132322680. Its totient is φ = 113419416.

The previous prime is 122871041. The next prime is 122871059. The reversal of 122871047 is 740178221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122871047 - 2⁴ = 122871031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122871041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4725797 + ... + 4725822.

It is an arithmetic number, because the mean of its divisors is an integer number (33080670).

Almost surely, 2^122871047 is an apocalyptic number.

122871047 is a deficient number, since it is larger than the sum of its proper divisors (9451633).

122871047 is an equidigital number, since it uses as much as digits as its factorization.

122871047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9451632.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 122871047 is about 11084.7213316348. The cubic root of 122871047 is about 497.1451264178.

The spelling of 122871047 in words is "one hundred twenty-two million, eight hundred seventy-one thousand, forty-seven".